<div class="swiper-container">
  <div class="swiper-wrapper">
    <div class="swiper-slide" *ngFor="let item of png">
      <img src="{{item.rotation_img}}">
    </div>
  </div>
  <!-- 如果需要分页器 -->
  <div class="swiper-pagination"></div>

  <!--&lt;!&ndash; 如果需要导航按钮 &ndash;&gt;-->
  <!--<div class="swiper-button-prev"></div>-->
  <!--<div class="swiper-button-next"></div>-->

  <!--&lt;!&ndash; 如果需要滚动条 &ndash;&gt;-->
  <!--<div class="swiper-scrollbar"></div>-->
</div>
